Abstract

The invention discloses an adjustable spinal internal fixator which comprises a nail body with an outer thread, wherein a nail head with the same outer thread as the nail body is arranged at one end of the nail body; an inner thread is formed in the nail body; the nail body is connected with a support post through the inner thread; one end of the support post extends out of the nail body and is clamped with the nail head; and the support post pushes the nail head to move through driving fit with the inner thread in the nail body, so that the centrum opening height is adjusted. The nail head is pushed to move through the support post; the target of freely adjusting the centrum height of a human body is achieved; and the centrum can completely restore into an original height confirming to the basic physiological curve of the human body, so that the treatment requirements of different people are met; the treatment effect on the diseases of lumbar instability, a thoracic lumbar degenerative disease and the like is improved.

Description

Translated from Chinese

可调式脊柱内固定器 The adjustable spinal fixation device

技术领域 FIELD

[0001]本发明涉及医疗器械技术领域，尤其是一种适用于治疗腰椎不稳、胸腰椎退行性病变的可调式脊柱内固定器。 [0001] The present invention relates to the field of medical devices, especially suitable for treatment of lumbar spinal instability, the adjustable lumbar degenerative disease of the thoracic spine fixator.

背景技术 Background technique

[0002]目前针对腰椎不稳、胸腰椎退行性病变等疾病的治疗，多采用椎间融合术处理上述症状，但这种治疗方式存在有一定的局限性，即一般而言，椎间融合术所使用的脊柱内固定器撑开椎体的高度是固定不变的，而实际上每个人的椎体高度多少存在着一定差异，因此就造成某些人治疗时，椎体无法完全恢复到原有高度，手术不彻底，甚至于椎体复位不理想而产生畸变现象。 [0002] Currently for lumbar instability, the treatment of thoracic and lumbar degenerative disease and other diseases, the use of interbody fusion process of the above symptoms, but there are some limitations of this treatment, that is, in general, interbody fusion when used in spinal fixation distraction height of the vertebral body it is fixed, and in fact everyone how much of vertebral body height there are some differences, therefore causing some treatment, vertebral can not be fully restored to original there are height, surgery is not complete, even vertebra reduction is not ideal and distorted phenomenon.

发明内容 SUMMARY

[0003]本发明要解决的技术问题是:克服现有技术中之不足，提供一种能自由调节椎体撑开高度、使椎体恢复到人体基本生理曲线的可调式脊柱内固定器。 [0003] The present invention is to solve the technical problem: to overcome the deficiencies of the prior art, to provide a vertebral distraction freely adjust the height of the vertebral body to restore basic human physiology adjustable spinal curve fixture.

[0004]本发明解决其技术问题所采用的技术方案是:一种可调式脊柱内固定器，包括具有外螺纹的钉体、位于钉体一端具有与钉体相同外螺纹的钉头，所述的钉体具有内螺纹，钉体通过内螺纹连接有支撑柱，支撑柱一端伸出钉体与钉头卡接，支撑柱通过与钉体的内螺纹传动配合推动钉头移动而调节椎体撑开高度。 [0004] aspect of the present invention to solve the technical problem is that: an in-adjustable spinal fixation comprising a staple having an external thread located at one end having the nail head nail body with the same external thread nail body, said the nail has an internal thread, the internal thread through the nail body is connected with a support column, the support column projecting end of the staple body and the stud snap, screw drives through the inner support post member with the staple push stud moves adjusted vertebral strut open height.

[0005]具体说，所述的支撑柱包括一体结构的外螺纹段、圆台体段和位于外螺纹段与圆台体段之间的连接段，外螺纹段与钉体的内螺纹传动连接，钉头具有与圆台体段相配的圆台形内腔，支撑柱通过圆台体段卡入钉头的圆台形内腔而与钉头卡接。 [0005] Specifically, the support post includes an externally threaded section of an integral structure, the connection section between the body segments rotary table and the external thread section and the body section truncated cone, an internally threaded drive external threaded section of the staple member is connected nails the head having a round body segment table matching frustum shaped cavity of the nail head support column by a truncated cone shaped cavity of a truncated cone segment card interface with a stud card.

[0006]进一步地，为方便拧转支撑柱，所述的外螺纹段端面具有转动支撑柱的六方沉孔。 [0006] Further, to facilitate twisting the support column, said end face having a hexagonal external threaded section of the support column rotatably counterbore.

[0007]为便于支撑柱与钉头卡接顺利，所述的钉头对应圆台形内腔的侧壁上开有便于涨开钉头而使支撑柱的圆台体段卡入圆台形内腔细缝。 [0007] To facilitate the support post and stud snap smoothly, corresponding to the nail head on the side wall of the truncated cone shaped cavity of the nail head is opened to facilitate the opening up of the support column truncated cone frustum shaped segment snaps into the lumen of the fine seam.

[0008]本发明的有益效果是:本发明通过支撑柱推动钉头移动，实现了自由调节人体椎体高度的目的，可使椎体完全恢复到符合人体基本生理曲线的原有高度，从而满足了不同人群的治疗要求，提高了腰椎不稳、胸腰椎退行性病变等病症的治疗效果。 [0008] Advantageous effects of the present invention are: the present invention is a mobile stud pushed through the support column, to achieve the object of the vertebral body freely adjustable height, can completely return to the original height of the vertebral body substantially in line with the physiological curve, to meet the the treatment requires different groups of people, to improve the lumbar spine instability, treatment of thoracic and lumbar degenerative disease and other diseases.

附图说明 BRIEF DESCRIPTION

[0009]下面结合附图和实施例对本发明进一步说明。 Figures and examples further illustrate the present invention [0009] The following binding.

[0010]图1是本发明的结构示意图。 [0010] FIG. 1 is a structural diagram of the present invention.

[0012]现在结合附图和优选实施例对本发明作进一步的说明。 [0012] Now conjunction with the drawings and preferred embodiments of the present invention will be further described.这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。 The drawings are simplified schematic way of illustration only schematically the basic structure of the present invention, therefore only the configuration of the display related to the present invention.

[0013]如图1所示的一种可调式脊柱内固定器，由钉体1、钉头2和支撑柱3连接组合而成。 [0013] 1 within the one shown in FIG adjustable spinal fixation device body 1 by a nail, screw head 2, and 3 are connected to the supporting column combination.

[0014]钉体1:为一具有外螺纹和内螺纹孔的圆柱体;钉头2:由锥形段和圆台段构成，锥形段的大端直径与钉体I直径相同，锥形段的小端与圆台段的小端连接，钉头2具有与钉体I相同的外螺纹，在钉头2的锥形段，开设有开口朝向锥形段大端的圆台形内腔2-1，钉头2的圆台段头部具有自攻槽;支撑柱3:包括一体结构的外螺纹段3-1、圆台体段3-2和位于外螺纹段3-1与圆台体段3-2之间的连接段3-3，外螺纹段3-1与钉体I的内螺纹传动连接，在外螺纹段3-1端面具有转动支撑柱3的六方沉孔3-4，连接段3-3直径小于外螺纹段3-1直径，圆台体段3-2与所述圆台形内腔2-1相配，支撑柱3通过圆台体段3-2卡入钉头2的圆台形内腔2-1而与钉头2卡接，而为了卡接方便，在钉头2锥形段的侧壁上开有一条轴向的细缝，这样就方便了涨开钉头2而使支撑柱3的圆台体段3-2卡入圆台形内腔2-1内。 [0014] Nail 1: is a cylindrical body having an outer thread and the inner threaded bore; nailhead 2: constituted by a tapered section and a truncated cone section, the same as the diameter of the large end diameter of the tapered section I nail body, tapered section the small end section and the small end of the truncated cone connector, stud body 2 having the same I nail an external thread, the screw head tapered section 2, defines a truncated cone opening towards the inner chamber of the big end tapered section 2-1, round table stud head section 2 has a self-tapping grooves; support column 3: a unitary structure comprising a outer threaded section 3-1, a truncated cone and the external thread section 3-2 and section 3-1 of the truncated cone section 3-2 between the connecting section 3-3, 3-1 externally threaded segment is connected with the internal thread I of the transmission pin body outer end surface having a thread segments 3-1 rotatably supporting column 3 hexagonal counterbore 3-4, 3-3 connected diameter section is smaller than the outer diameter of the thread segments 3-1, 3-2 and the truncated cone section of the truncated cone shaped cavity of the match 2-1, the supporting column 3 into the nail head frustum shaped cavity of 2-12 by a truncated cone segment card 3-2 2 with the snap screw head, and in order to facilitate access cards, there is an axial slit opening on the side wall of the conical section 2 the screw head, so to facilitate the opening up the screw head 2 of the supporting column 3 frustum 3-2 into the card body section truncated cone lumen 2-1.

[0015]支撑柱3—端伸出钉体I与钉头2卡接后，支撑柱3通过与钉体I的内螺纹传动配合推动钉头2移动而调节椎体撑开高度。 [0015] 3- projecting end of the support post and staple member after the screw head 2 I snap, support column 3 by adjusting the height of the vertebral distraction transmission pin member with the internal thread I complexes to promote movement of the screw head 2.

[0016]上述钉体1、钉头2和支撑柱3均采用的GB13810-2007规定的TC4钛合金材料制作，制作时，钉体I和钉头2—体加工，加工完毕沿钉体I与钉头2锥形段相接处切割，并在钉头2锥形段外壁上开一条轴向的细缝，将支撑柱3的外螺纹段3-1拧入钉体I的内螺纹连接，支撑柱3的圆台体段3-2露出钉体外，将钉头2卡套在圆台体段3-2上。 [0016] The nail body 1, the screw head 3 and the supporting beams 2 are made of titanium alloy TC4 GB13810-2007 predetermined material, the production of the staple body member I and the stud 2- processing, the staple processing is completed along with the body I 2 the screw head tapered section at the cutting phase, and a wall of the opening slit in the axial section of the outer conical screw head 2, a support column 3 of the male screw section 3-1 is screwed into the internal thread I nail connecting body, truncated cone segment support posts 3-23 are exposed in vitro nail, the nail head ferrule 2 on a truncated cone section 3-2.手术时，先用骨刀在人体的腰椎尾椎上开一小口，再用钻头沿着小口钻一个一定深度的孔，然后用持钉器把持住内固定器，顺着孔通过钉头2圆台段头部的自攻槽作用，将内固定器旋入椎体，接着用起子卡入支撑柱3头部的六方沉孔3-4，旋转支撑柱3，支撑柱3通过与钉体I的内螺纹传动配合推动钉头2移动而调节椎体撑开高度，将椎体撑到想要达到的高度，这样手术就完成了。 Surgery, with a first opening and a small opening osteotome in the caudal lumbar vertebrae of the human body, and then drilling a small hole along the drill hole depth is constant, then the staple holder holding the indwelling holder hole by the screw head 2 along the circular table self-tapping grooves action, the inner holder screwed into the vertebral body, and then into the head of the support column 3 with a screwdriver card hexagonal head counterbore section 3-4, the rotary support column 3, the support column 3 by the nail body I internal thread mating gear driven screw head 2 is moved to adjust the height of the vertebral distraction, vertebral support will be achieved to the desired height, so that the operation is complete.

[0017]本发明通过支撑柱3推动钉头2移动，实现了自由调节人体椎体高度的目的，可使椎体完全恢复到符合人体基本生理曲线的原有高度，从而满足了不同人群的治疗要求，提高了腰椎不稳、胸腰椎退行性病变等病症的治疗效果。 [0017] The present invention is a support column 3 by pushing the screw head 2 is moved to achieve the object of the vertebral body freely adjustable height, can completely return to the original height of the vertebral body substantially in line with the physiological curve, to meet the different groups of treatment requirements, improve the lumbar spine instability, treatment of thoracic and lumbar degenerative disease and other diseases.

[0018]上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围内。 [0018] Examples of the above-described embodiments illustrate the technical concept and features of the invention, its object is to only allow those familiar with the art to understand the present invention and implement them, and thus does not limit the scope of the present invention, where an equivalent variations or modifications made from the spirit of the present invention, shall fall within the protection scope of the present invention.

Claims (4)

Translated from Chinese

1.一种可调式脊柱内固定器，包括具有外螺纹的钉体(I)、位于钉体(I) 一端具有与钉体(I)相同外螺纹的钉头(2)，其特征是:所述的钉体(I)具有内螺纹，钉体(I)通过内螺纹连接有支撑柱(3)，支撑柱(3)—端伸出钉体(I)与钉头(2)卡接，支撑柱(3)通过与钉体(I)的内螺纹传动配合推动钉头(2)移动而调节椎体撑开高度。 An internal adjustable spinal fixation comprising a staple (I) is with an external thread, a staple located in the body (I) having a stud at one end of the staple (I) is the same as the external thread (2), characterized in that: the staple body (I) has an internal thread, a staple (I) is connected by an internal thread with a support column (3), a support column (3) - the staple ends projecting body (I) and the screw head (2) snap support posts (3) drives the staple through the inner threaded member (I) is driven with the screw head (2) moves to adjust the height of the vertebral distraction.

2.根据权利要求1所述的可调式脊柱内固定器，其特征是:所述的支撑柱(3)包括一体结构的外螺纹段(3-1)、圆台体段(3-2)和位于外螺纹段(3-1)与圆台体段(3-2)之间的连接段(3-3)，外螺纹段(3-1)与钉体(I)的内螺纹传动连接，钉头(2)具有与圆台体段(3-2)相配的圆台形内腔(2-1)，支撑柱(3)通过圆台体段(3-2)卡入钉头(2)的圆台形内腔(2-1)而与钉头(2)卡接。 The claims adjustable spinal fixation device of claim 1, wherein: said support post (3) comprises an outer threaded section (3-1) of the integral structure, a round body segment table (3-2) and external thread section (3-1) connecting section (3-3) between the body section and the circular table (3-2), an internally threaded drive external thread segments (3-1) of the staple (I) is connected nails head (2) having a (3-2) frustum-shaped internal cavity matched (2-1), the body support column section circular table (3) by a round table body section (3-2) snaps into the screw head (2) of the truncated cone lumen (2-1) with the screw head (2) snap.

4.根据权利要求2所述的可调式脊柱内固定器，其特征是:所述的钉头(2)对应圆台形内腔(2-1)的侧壁上开有便于涨开钉头(2)而使支撑柱(3)的圆台体段(3-2)卡入圆台形内腔(2-1)的细缝。 The adjustable according to claim 2 of formula A spinal fixation device, wherein: said nail head (2) is opened to facilitate the opening up the nail heads on the corresponding side wall frustum-shaped internal cavity (2-1) ( round body segment table 2) the supporting column (3) (3-2) snaps into frustum-shaped internal cavity (2-1) of the slit.